############### Code

<?php
$host="localhost"; // Host name
$username="root"; // Mysql username
$password=""; // Mysql password
$db_name="soltheatre"; // Database name
$tbl_name="members"; // Table name

// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// get value of id that sent from address bar
$id=$_GET['id_user'];


// Retrieve data from database
$sql="SELECT * FROM $tbl_name WHERE id_user='$id'";
$result=mysql_query($sql);

$rows=mysql_fetch_array($result);
?>
<table width="400" border="0" cellspacing="1" cellpadding="0">
<tr>
<form name="form1" method="post" action="update_ac.php">
<td>
<table width="100%" border="0" cellspacing="1" cellpadding="0">
<tr>
<td>&nbsp;</td>
<td colspan="4"><strong>Update data in mysql</strong> </td>
</tr>

// ******** somewhere here there are not enough fields or columns defined. **************
<tr>
<td align="center">&nbsp;</td>
<td align="center">&nbsp;</td>
<td align="center">&nbsp;</td>
<td align="center">&nbsp;</td>
</tr>
<tr>
<td align="center">&nbsp;</td>
<td align="center"><strong>Name</strong></td>
<td align="center"><strong>Username</strong></td>
<td align="center"><strong>phonenumber</strong></td>
<td align="center"><strong>E-mail</strong></td>
</tr>
<tr>
<td>&nbsp;</td>
<td align="center"><input name="name" type="text" id="name" value="<? echo $rows['name']; ?>"></td>

<td align="center"><input name="username" type="text" id="username" value="<?
echo $rows['username']; ?>" size="15"></td>

<td align="center"><input name="phonenumber" type="text" id="phonenumber" value="<? echo $rows['phonenumber']; ?>" size="15"></td>

<td align="center"><input name="phonenumber" type="text" id="email" value="<? echo $rows['email']; ?>" size="15"></td>

</tr>

<tr>
<td>&nbsp;</td>
<td><input name="id" type="hidden" id="id" value="<? echo $rows['id_user']; ?>"></td>
<td align="center"><input type="submit" name="Submit" value="Submit"></td>
<td>&nbsp;</td>
</tr>
</table>
</td>
</form>
</tr>
</table>

<?

// close connection
mysql_close();

?>